Romney stopped at Holman Stadium to rally voters, saying he needs their help to win the state and its four electoral votes.

Ann Romney introduced her husband, who stood behind home plate as the crowd spelled out his name.

"New Hampshire is doing it well tonight. I got to tell you, you guys are great," Mitt Romney said.

Mitt Romney wasted no time diving into the latest jobs and unemployment numbers.

"Middle-income families are having a hard time. This president hasn't taken responsibility for his economic policies," Mitt Romney said. "He is out of ideas, and he is out of excuses."

Mitt Romney laid out his five-point plan for boosting the economy and jobs by focusing on energy sources, trade, schools, a balanced budget and small business.

"It is going to require me being elected president, and New Hampshire is going to do it," Mitt Romney said. "I need you to find one person who voted for Barack Obama. There are at least a couple here in New Hampshire. I want you to find someone who voted for Barack Obama last time, and ask that person, 'Did he do what you thought he would do?'"

The campaign stop wrapped up with a passionate rallying cry.

"I love this country. We're going to take back America. We're going to take a new step in America that keeps us strong and free and prosperous. You deserve it. Your kids deserve it. The world demands it. This is the greatest country in the history of the Earth," Mitt Romney said.

Ann and Mitt Romney jumped into the crowd to thank their supporters – a mix of Republicans and undecided voters.

The Obama administration will unveil a major climate change plan Monday aimed at a large reduction in greenhouse gas emissions from the nation's coal-burning power plants, a senior administration official told CNN.